When the ignition switch is placed to the ON position, the ESC indicator light illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the ESC system. When this warning light illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The ESC OFF indicator light comes on when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates the ESC is active:
Drive slowly and NEVER attempt to accelerate. NEVER turn the ESC off while the ESC indicator light is blinking or you may lose control of the vehicle resulting in an accident.
NOTICE
Driving with varying tire or wheel sizes may cause the ESC system to malfunction. When replacing tires, make sure they are the same size as your original tires for this vehicle.
Hyundai Sonata LF 2014-2019 Owners Manual: Automatic reverse
If a window senses any obstacle while it is closing automatically, it will stop
and lower approximately 12 inches (30 cm) to allow the object to be cleared.
If the window detects the resistance while the power window switch is pulled
up continuously, the window will stop upward movement then lowe ...
Hyundai Sonata LF 2014-2019 Service Manual: Idler Repair procedures
Removal and Installation
1.
Remove the drive belt.
(Refer to Timing System - "Dreve Belt")
2.
Remove the idler (A).
Tightening torque :
42.2 ~ 53.9 N.m (4.3 ~ 5.5 kgf.m, 31.1 ~ 39.8 lb-ft)
3.
Install in the reverse order of removal. ...